CN103616294B - Steel wheel rail force loading platform and steel wheel rail force loading method - Google Patents

Steel wheel rail force loading platform and steel wheel rail force loading method Download PDF

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Publication number
CN103616294B
CN103616294B CN201310657389.2A CN201310657389A CN103616294B CN 103616294 B CN103616294 B CN 103616294B CN 201310657389 A CN201310657389 A CN 201310657389A CN 103616294 B CN103616294 B CN 103616294B
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China
Prior art keywords
rail
loading
force
free bearing
oil cylinder
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Expired - Fee Related
Application number
CN201310657389.2A
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Chinese (zh)
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CN103616294A (en
Inventor
戴恒震
刘冲
张志新
任同群
焦振华
何亮
王天娆
张丽华
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SUZHOU DINGHAN SENSOR NETWORK TECHNOLOGY Co Ltd
Dalian University of Technology
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SUZHOU DINGHAN SENSOR NETWORK TECHNOLOGY Co Ltd
Dalian University of Technology
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Priority to CN201310657389.2A priority Critical patent/CN103616294B/en
Publication of CN103616294A publication Critical patent/CN103616294A/en
Application granted granted Critical
Publication of CN103616294B publication Critical patent/CN103616294B/en
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Abstract

The invention relates to a steel rail wheel-rail force loading platform and a steel wheel rail force loading method. A hydraulic actuating oil cylinder (11) and a special loading head (18) are utilized for simulating the action force of vehicle wheels on steel rails (5); the steel wheel rail force loading platform comprises bottom box girders (3), vertical columns (4), a cross box girder (7), an actuating oil cylinder (11), hinged support plates (10), an upper pressure plate (8), a loading head (18), a holding frame (15), a heightening hinged support (12), hinge pins and connecting bolts, wherein the positions of the vertical columns (4) and the cross box girder (7) on the bottom box girder (3) are adjustable, the actuating oil cylinder (11) is arranged below the cross box girder (7), the lower part of the actuating oil cylinder (11) is connected to the loading head (18), the posture of the loading head (18) is constrained by the holding frame (15), and the heightening hinged support (12) on the lower side surface of the vertical column (4) determines the posture of the holding frame (15), so that the direction of the loading force is changed. The loading force of the steel wheel rail rail force loading platform is controllable, and the steel wheel rail force loading platform is convenient to use.

Description

A kind of rail wheel rail force loading bench and method
Technical field
The present invention relates to a kind of rail wheel rail force analog loading device, especially relate to a kind of high-speed railway seamless rail wheel rail force analog loading device.
Background technology
China is railway big country in the world, and passenger traffic and shipping circuit spread all over the country, along with railway operation speed and launch weight constantly increase, more and more important to the monitoring of railway track safety.For gapless track long rail string, owing to being subject to the constraint of rail joint resistance, fastener resistance and ballast resistance, when rail temperature changes, axially temperature stress will be produced in long rail string.When rail temperature declines, in rail, produce axial tension; When train passes through at a high speed, the wheel of train can cause enormous impact to rail, it is main vibration and distortion that wheel rail force makes rail produce vertical, especially in the winter of cold district, in rail, longitudinal temperature pulling force is larger, add the chronic fatigue effect of wheel rail force, can bring out to crack at rail weakness and even rupture, and then cause Loss of Life and property.The accident caused for avoiding this kind of problem occurs, a kind of wireless sense network be made up of wireless sensing measuring unit of nearest research is for carrying out long-term safety detection to gapless rail, its measuring unit is arranged on actual gapless track key position by unit clamp, associated calibration is had to pass through before installation, in order to study the safe condition of rail under wheel rail force effect, except the monitoring to actual track, also need the wheel rail force when Experimental Base simulation train wheel presses through the rail of measuring unit institute installation site, for this reason, set up rail wheel rail force loading bench and have very important meaning.
Summary of the invention
The technical solution used in the present invention there is provided a kind of rail wheel rail force loading bench, is made up of measuring unit, under casing beam, column, horizontal case beam, start oil cylinder and special loading head; Measuring unit to be fixed on inside tested rail in deep-slotted chip breaker; For measuring the load-time curve of rail; Arrange respectively on the ground, both sides of test rail track two with the under casing beam of parallel track, under casing beam is fixed on the ground by foot bolt, to distribute multiple bolt hole in the upper uniform plane of under casing beam, two columns are separately fixed on two under casing beams by upstanding studs, and the horizontal case beam of level is fixedly connected with by transom bolt with two columns across track; Install pressing plate at the upper surface of horizontal case beam, the lower surface of horizontal case beam installs free bearing plate, and top board and free bearing plate consistency from top to bottom, fix with four thru-bolts; Start oil cylinder two ends adopt spherical hinge structure, and the upper ball pivot of start oil cylinder is connected on free bearing plate by upper pin, and the lower ball pivot of start oil cylinder is connected on special loading head by lower bearing pin, and the latter half of loading head is processed to the shape of wheel tread; Heighten free bearing to be fixedly mounted on by heightening free bearing bolt on the medial surface of column bottom, holding frame one end is hinged on to be heightened on free bearing, and the other end is bolted on loading head by loading head; Measuring unit is fixed on the rail of surveyed rail section.
Under casing beam upper surface arranges the identical bolt hole of multiple spacing, and the bolt hole in two column lower end faces is identical with the bolt hole spacing of the upper plane of under casing beam is convenient to the position adjusting column according to load(ing) point.
Respectively there is multiple mounting hole in two column lower inside surface, be convenient to heighten the height heightening free bearing when free bearing bolt connects, change the direction of loading force.
Start oil cylinder, exports simulation rail wheel rail force according to the load waveform set, frequency and amplitude.
Can by start oil cylinder, free bearing plate, top board, loading head, holding frame and heighten free bearing move on to opposite side assembling, load test is carried out to another rail.
Rail wheel rail force loading bench using method, according to the load-time curve that train wheel obtains through the feedback of gapless track measurement point measuring unit, utilize electro-hydraulic servo actuating system, hydraulic actuation oil cylinder is installed special loading head simulating wheel to the effect of rail, generate the dynamic wheel rail force of specific waveforms;
Step one, starts control software design, electro-hydraulic servo actuating system control software design interface arranges output waveform function, vibration frequency and vibration number;
Step 2, primer fluid pressing system, progressively raises oil pressure to required output loads required value;
Step 3, perform working routine, electro-hydraulic servo actuating system exports special beneficial effect of the present invention by setting requirement and is to utilize so a kind of rail wheel rail force loading bench, the environment of train wheel effect rail is provided, rail stress measuring unit is coordinated can efficiently to carry out the research of rail safe condition, and easy to use, experimentation cost is little.
Beneficial effect of the present invention is the load-time curve obtained through the feedback of gapless track measurement point measuring unit according to train wheel, utilize electro-hydraulic servo actuating system, hydraulic actuation oil cylinder is installed special loading head simulating wheel to the effect of rail, generate the dynamic wheel rail force of specific waveforms, make process of the test truer, test findings is reliable.This wheel rail force charger loading force is controlled, easy to use.
Accompanying drawing explanation
Fig. 1 rail wheel rail force charger axonometric drawing;
Fig. 2 rail wheel rail force charger front view;
Fig. 3 rail wheel rail force charger Local map.
In figure: 1. foot bolt, 2. upstanding studs, 3. under casing beam, 4. column, 5. rail, 6. transom bolt, 7. horizontal case beam, 8. top board, 9. thru-bolt, 10. free bearing plate, 11. start oil cylinders, 12. heighten free bearing, and 13. heighten free bearing bolt, 14. long pin shaft, 15. hold frame, 16. lower bearing pins, 17. loading head bolts, 18. loading heads, 19. measuring units, 20. upper pins.
Embodiment:
Below in conjunction with technical scheme and accompanying drawing, the present invention is further described.
A kind of rail wheel rail force loading bench, is made up of measuring unit 19, under casing beam 3, column 4, horizontal case beam 7, start oil cylinder 11 and special loading head 18; Measuring unit 19 to be fixed on inside tested rail 15 in deep-slotted chip breaker; For measuring the load-time curve of rail 15; Arrange respectively on the ground, both sides of test rail track two with the under casing beam 3 of parallel track, under casing beam 3 is fixed on the ground by foot bolt 1, to distribute multiple bolt hole in the upper uniform plane of under casing beam 3, two columns are separately fixed on two under casing beams 3 by upstanding studs 2, and the horizontal case beam 7 of level is fixedly connected with by transom bolt 6 with two columns 4 across track; Pressing plate (8) is installed at the upper surface of horizontal case beam (7), the lower surface of horizontal case beam (7) installs free bearing plate (10), top board (8) and free bearing plate (10) consistency from top to bottom, fix with four thru-bolts 9; Start oil cylinder (11) two ends adopt spherical hinge structure, the upper ball pivot of start oil cylinder (11) is connected on free bearing plate (10) by upper pin (20), the lower ball pivot of start oil cylinder (11) is connected on special loading head 18 by lower bearing pin 16, and the latter half of loading head 18 is processed to the shape of wheel tread; Heightening free bearing 12 is fixedly mounted on the medial surface of column 4 bottom by heightening free bearing bolt (13), and holding frame 15 one end is hinged on to be heightened on free bearing 12, and the other end is fixed on loading head 18 by loading head bolt 17; Measuring unit 19 is fixed on the rail of surveyed rail section.
Under casing beam 3 upper surface arranges the identical bolt hole of multiple spacing, and the bolt hole of two column 4 lower surfaces is identical with the bolt hole spacing of the upper plane of under casing beam 3 is convenient to the position adjusting column 4 according to load(ing) point.
Respectively there is multiple mounting hole in two column 4 lower inside surface, be convenient to heighten the height heightening free bearing (12) when free bearing bolt (13) connects, change the direction of loading force.
Start oil cylinder (11), exports simulation rail wheel rail force according to the load waveform set, frequency and amplitude.
Can by start oil cylinder 11, free bearing plate 10, top board 8, loading head 18, hold frame 15 and heighten free bearing 12 move on to opposite side assembling, load test is carried out to another rail.
Rail wheel rail force loading bench using method, according to the load-time curve that train wheel obtains through the feedback of gapless track measurement point measuring unit 19, utilize electro-hydraulic servo actuating system, hydraulic actuation oil cylinder 11 is installed special loading head simulating wheel to the effect of rail, generate the dynamic wheel rail force of specific waveforms;
Step one, starts control software design, electro-hydraulic servo actuating system control software design interface arranges output waveform function, vibration frequency and vibration number;
Step 2, primer fluid pressing system, progressively raises oil pressure to required output loads required value;
Step 3, performs working routine, and electro-hydraulic servo actuating system exports the dynamic wheel rail force of specific waveforms by setting requirement, changes the direction of loading force, then heighten the setting height(from bottom) of free bearing 12 as needed, and is pressing above-mentioned steps test;
Step 4, closes Hydraulic system and control device switch by regulatory requirements, completes test.

Claims (6)

1. a rail wheel rail force loading bench, is made up of measuring unit (19), under casing beam (3), column (4), horizontal case beam (7), start oil cylinder (11) and special loading head (18); Measuring unit (19) is fixed in the deep-slotted chip breaker of tested rail (15) inner side; For measuring the load-time curve of rail (15); It is characterized in that arranging respectively on the ground, both sides of test rail track two with the under casing beam (3) of parallel track, under casing beam (3) is fixed on the ground by foot bolt (1), to distribute multiple bolt hole in the upper uniform plane of under casing beam (3), two columns are separately fixed on two under casing beams (3) by upstanding studs (2), and the horizontal case beam (7) of level is fixedly connected with by transom bolt (6) with two columns (4) across track; Pressing plate (8) is installed at the upper surface of horizontal case beam (7), the lower surface of horizontal case beam (7) installs free bearing plate (10), top board (8) and free bearing plate (10) consistency from top to bottom, fix with four thru-bolts (9); Start oil cylinder (11) two ends adopt spherical hinge structure, the upper ball pivot of start oil cylinder (11) is connected on free bearing plate (10) by upper pin (20), the lower ball pivot of start oil cylinder (11) is connected on special loading head (18) by lower bearing pin (16), and the latter half of loading head (18) is processed to the shape of wheel tread; Heighten free bearing (12) to be fixedly mounted on by heightening free bearing bolt (13) on the medial surface of column (4) bottom, holding frame (15) one end is hinged on to be heightened on free bearing (12), and the other end is fixed on loading head (18) by loading head bolt (17); Measuring unit (19) is fixed on the rail of surveyed rail section.
2. a kind of rail wheel rail force loading bench according to claim 1, it is characterized in that under casing beam (3) upper surface arranges the identical bolt hole of multiple spacing, the bolt hole of two column (4) lower surfaces is identical with the bolt hole spacing of the upper plane of under casing beam (3) is convenient to the position adjusting column (4) according to load(ing) point.
3. a kind of rail wheel rail force loading bench according to claim 1, it is characterized in that respectively there is multiple mounting hole in two columns (4) lower inside surface, be convenient to heighten the height heightening free bearing (12) when free bearing bolt (13) connects, change the direction of loading force.
4. a kind of rail wheel rail force loading bench according to claim 1, is characterized in that start oil cylinder (11), exports simulation rail wheel rail force according to the load waveform set, frequency and amplitude.
5. a kind of rail wheel rail force loading bench according to claim 1, it is characterized in that can by start oil cylinder (11), free bearing plate (10), top board (8), loading head (18), hold frame (15) and heighten free bearing (12) move on to opposite side assembling, load test is carried out to another rail.
6. the using method of the arbitrary described a kind of rail wheel rail force loading bench of claim 1-5, according to the load-time curve that train wheel obtains through the feedback of gapless track measurement point measuring unit (19), utilize electro-hydraulic servo actuating system, at the special loading head simulating wheel of the upper installation of hydraulic actuation oil cylinder (11) to the effect of rail, generate the dynamic wheel rail force of specific waveforms;
Step one, starts control software design, electro-hydraulic servo actuating system control software design interface arranges output waveform function, vibration frequency and vibration number;
Step 2, primer fluid pressing system, progressively raises oil pressure to required output loads required value;
Step 3, performs working routine, and electro-hydraulic servo actuating system exports the dynamic wheel rail force of specific waveforms by setting requirement, changes the direction of loading force, then heighten the setting height(from bottom) of free bearing (12) as needed, and is pressing above-mentioned steps test;
Step 4, closes Hydraulic system and control device switch by regulatory requirements, completes test.
CN201310657389.2A 2013-12-04 2013-12-04 Steel wheel rail force loading platform and steel wheel rail force loading method Expired - Fee Related CN103616294B (en)

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CN104614139B (en) * 2014-12-09 2017-07-18 北京交通大学 A kind of free wheel load drop exciting device
CN105699034B (en) * 2016-02-23 2018-07-27 同济大学 A kind of vertical exciting device of portable rail
CN105928652A (en) * 2016-06-30 2016-09-07 中交航局第二工程有限公司 Capsule trolley force-bearing detection apparatus and use method thereof
CN106225978B (en) * 2016-08-31 2022-02-08 青岛大学 Railway transverse wheel rail force calibration device, system and calibration method thereof
CN112304651A (en) * 2019-07-29 2021-02-02 比亚迪股份有限公司 Track beam static load test bed and construction method thereof
CN110954397A (en) * 2019-12-27 2020-04-03 郑州铁路职业技术学院 System and method for detecting load condition of railway engineering
CN112229736A (en) * 2020-12-14 2021-01-15 西南交通大学 Wheel-rail force calibration device, method and system

Citations (4)

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Publication number Priority date Publication date Assignee Title
CN2467367Y (en) * 2001-02-28 2001-12-26 郑州铁路局红外线检修试验所技协技术服务部 Railway train wheel tread fault detecting apparatus
DE102005019372B3 (en) * 2005-04-26 2006-10-26 Wieland-Werke Ag Apparatus for marking workpieces and samples subjected to stress or strain or pressure loads for testing and having a pneumatic spacer and clamp cylinder
CN103207117A (en) * 2013-03-07 2013-07-17 大连理工大学 Stimulation experiment system for high-speed railway steel rail static loadings
CN103344788A (en) * 2013-07-20 2013-10-09 大连理工大学 Gravitational potential energy impact type acceleration generating device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2467367Y (en) * 2001-02-28 2001-12-26 郑州铁路局红外线检修试验所技协技术服务部 Railway train wheel tread fault detecting apparatus
DE102005019372B3 (en) * 2005-04-26 2006-10-26 Wieland-Werke Ag Apparatus for marking workpieces and samples subjected to stress or strain or pressure loads for testing and having a pneumatic spacer and clamp cylinder
CN103207117A (en) * 2013-03-07 2013-07-17 大连理工大学 Stimulation experiment system for high-speed railway steel rail static loadings
CN103344788A (en) * 2013-07-20 2013-10-09 大连理工大学 Gravitational potential energy impact type acceleration generating device

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